from collections import OrderedDict

d = dict()
d['a'] = 1
d['b'] = 2
d['c'] = 3

#not sorted
for key in d:
    print (d[key])

#OrderedDict = 2*Dict Memory
d = OrderedDict()
d['a'] = 1
d['b'] = 2
d['c'] = 3

#sorted
for key in d:
    print (d[key])
